is this genuine stamford or is it a replacement

Hi ChristopherThis is a generic reoplacement that carries a 1 year warranty. We also have the original available at our Amazon store.Ed

Quiero saber si es buen producto y si lo recomiendan

Hasta el momento funciona a la perfección. Y salvo problemas de fabricación como cualquier producto electrónico es recomendable

do you have a wiring diagram for converting from 350-28700 avr to the as440 avr?

If you are going to use the AS440, you won't be connecting P2,P3&P4, for the PMG. They will need to be safely isolated and taped off. 7 &8 are your voltage sensing wires, may also be labeled 2& 3, go on the terminals marked as such. The exciter wires are x and xx and go on the terminals marked as such. All the markings are on the back side of the regulator. Don't forget to set the jumpers for you correct Hz and pole arrangement. This is also shown on the paperwork sent with the regulator.

My as 440 has a transformer on it, this one does not appear to. what is the diference?

First make certain it is the same model. Second,the transformer may have been replaced with other components. None of the replacement AS440 have a transformer.

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Thunder Parts | AVR AS440 | Generic Replacement for Cummins AS440 Automatic Voltage Regulator | 2 Year Warranty

Thunder Parts | AVR AS440 | Generic Replacement for Cummins AS440 Automatic Voltage Regulator | 2 Year Warranty

Product ID: 34788346

⚡±1.0% voltage regulation precision

🔌Selectable input voltage: 100-130V or 190-264V

🔧2-year hassle-free warranty

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Description

⚡ Power up your engine’s heart with precision and reliability!

PRECISION POWER CONTROL - Maintain stable voltage with ±1.0% regulation for peak engine performance
RELIABLE CURRENT OUTPUT - Continuous 4A current with robust 15Ω resistance ensures steady operation
PLUG AND PLAY REPLACEMENT - Exact generic fit for Cummins AS440, minimizing downtime and installation hassle
CONFIDENCE BACKED WARRANTY - 2-year warranty guarantees durability and peace of mind for professionals
FLEXIBLE VOLTAGE COMPATIBILITY - Easily switch input voltage settings to fit diverse power needs

The Thunder Parts AVR AS440 is a generic replacement Automatic Voltage Regulator designed for Cummins AS440 alternators. It offers selectable input voltage ranges (100-130V or 190-264V), precise voltage regulation within ±1.0%, and a continuous 4A current output with 15Ω resistance. Backed by a 2-year warranty, it ensures dependable performance and easy installation for professional-grade power management.

Specifications

ASIN	B01IDRW0MM
Best Sellers Rank	#520,121 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,451 in Power Converters
Customer Reviews	4.1 4.1 out of 5 stars (19)
Date First Available	July 13, 2016
Is Discontinued By Manufacturer	No
Item Weight	12 ounces
Item model number	AS440 AVR
Manufacturer	Thunder Parts
Package Dimensions	6.4 x 4.6 x 2.4 inches

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24182 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hungary.

Secure transaction

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